I.D. Micrometer, I.D. Gauge, Bore 5-30mm, Accuracy Range 0.01mm, Spanner + Calibration Ring + Wooden Case, Silver, One Piece Nine Winery Products are shipped according to the colour or size of the main image on the product page. Quality: This bore micrometer kit is made of high quality stainless steel with a chrome plated surface for wear resistance and durability, not only for a better experience, but also for a longer life. Accuracy: Clear laser marked lines for easy reading, the measuring surface is fully hardened, precision ground and micro-ring finished to ensure extremely accurate measurements. The measuring range is approximately 5-30mm with an accuracy of 0.01mm. Packaging: If you purchase this product you will receive 1 internal micrometer + 1 spanner + 1 calibration ring + 1 box of gauges.' Wooden packaging. Application: The internal micrometer is ideal for measuring workpiece holes, recess depths, heights etc. Product size: 13 * 4 cm Product colour: silver Delivery quantity: one piece